US20120033839A1 - Exterior power supply for hearing aid - Google Patents
Exterior power supply for hearing aid Download PDFInfo
- Publication number
- US20120033839A1 US20120033839A1 US13/273,772 US201113273772A US2012033839A1 US 20120033839 A1 US20120033839 A1 US 20120033839A1 US 201113273772 A US201113273772 A US 201113273772A US 2012033839 A1 US2012033839 A1 US 2012033839A1
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- US
- United States
- Prior art keywords
- power
- battery
- hearing aid
- hole
- thin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
- H04R31/006—Interconnection of transducer parts
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
- H04R25/60—Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles
- H04R25/602—Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles of batteries
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2225/00—Details of deaf aids covered by H04R25/00, not provided for in any of its subgroups
- H04R2225/31—Aspects of the use of accumulators in hearing aids, e.g. rechargeable batteries or fuel cells
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2225/00—Details of deaf aids covered by H04R25/00, not provided for in any of its subgroups
- H04R2225/33—Aspects relating to adaptation of the battery voltage, e.g. its regulation, increase or decrease
Definitions
- the present invention relates to the field of a battery-powered hearing aid, and more particularly to an exterior power supply for a battery powered hearing aid.
- a battery-powered hearing aid commonly requires button cell battery used as power source thereof.
- the user replaces the button cell battery of the hearing aid when he or she can no longer hear sounds clearly.
- Most of the button cell batteries contain mercury, which is a pollution source. If the user uses the non-rechargeable battery, he or she has to pay more money to buy the button cell batteries.
- buttons cell batteries are rechargeable, a capacity thereof is too small to provide a long use term so that the rechargeable button cell has to be often accessed from a battery container of the hearing aid. According to statistics, about 40% of hearing aid fixing is to replace a battery door of the battery container of the hearing aid.
- a rechargeable battery assembly for a headset has a casing 83 a, a power conducting pole 82 a, a power socket 36 and a power wire 38 with a power plug 37 .
- the power socket is embedded inside the casing for receiving the power plug of the power wire 38 and electronically connected to the batteries 62 inside the casing.
- the casing uses the power socket so that a battery door is not required.
- the present invention provides an exterior power supply for hearing aid to mitigate or obviate the aforementioned problems.
- the main objective of the present invention is to provide an exterior power supply for a battery powered hearing so that a battery door of a battery container of the hearing aid is not closed or opened frequently.
- the exterior power supply for a hearing aid has a battery-shaped conductor, two thin power contacts, and a DC power source.
- the battery-shaped conductor is received in a battery container of the hearing aid and has a top electrode and a bottom electrode.
- the thin power contacts are mounted to the battery-shaped conductor and respectively and electronically connected to the top and bottom electrodes of the battery-shaped conductor.
- Each thin power contact has a thickness matching a gap between an opening and a door of the battery container of the hearing aid.
- the DC power source is electronically connected to the battery-shaped conductor through a power wire and the thin power contacts to output DC power to the top and bottom electrodes of the battery-shaped conductor. Therefore, the hearing aid obtains DC power from the battery-shaped conductor and the button cell is not replaced frequently.
- FIG. 1 is a perspective view showing an exterior power supply to a hearing aid in accordance with the present invention
- FIG. 2 is an exploded perspective view of the power supply electrode contact in accordance with the present invention.
- FIG. 3 is an exploded perspective view of the exterior power supply in accordance with the present invention.
- FIG. 4 is a circuit diagram of the exterior power supply in accordance with the present invention.
- FIGS. 5A to 5C are operational views of the exterior power supply in accordance with the present invention.
- an exterior power supply in accordance with the present invention has a DC power source 2 , a power wire 3 , two thin power contacts 106 , 107 and a battery-shaped conductor 1 .
- the DC power source 2 has a positive electrode 212 and a negative electrode 213 respectively connected to the power wire 3 .
- the two thin power contacts 106 , 107 are respectively and electronically connected to the positive and negative electrodes 212 , 213 through the power wire 3 . That is, two rear ends of the thin power contacts 106 , 107 are respectively connected to the power wire 3 .
- a through hole 116 is formed at one of two front ends of the thin power contacts 106 .
- the power wire 3 has two PVC plastic heads 108 .
- the rear ends of the two thin power contacts 106 , 107 are inserted into one of the PVC plastic heads 108 .
- the battery-shaped conductor 1 is manufactured according to the size of button cell used by the hearing aid (such as battery number 675, 13, 312, 10, and 5 etc.).
- the battery-shaped conductor 1 has an insulation body 104 having an insulation plate 102 , a conductive plate 105 and an insulation housing 101 .
- the insulation body 104 further has a first through hole 111 , and a second hole 113 on a top of the insulation body.
- One of the two front ends of the two thin power contacts 107 is mounted on the top of the insulation body 104 and next to the first through hole 111 .
- the front end of the other thin power contact 106 is mounted on the second hole 113 and the through hole 116 of the thin power contact 106 is aligned with the second hole 113 .
- the conductive plate 105 is mounted on a bottom of the insulation body 104 and further has a hollow pole 112 inserted to the through hole 111 .
- a first screw 103 is threaded into the first through hole 111 of the insulation body 104 from the top of the insulation body 104 and then touches the front end of the thin power contact 107 . Therefore, the thin power contact 107 is electronically connected to the conductive plate 105 through the first screw 103 .
- the conductive plate 105 is used as a bottom electrode of the battery-shaped conductor 1 .
- the insulation plate 102 covers the top of the insulation body and two front ends of the thin power contacts 106 , 107 in part.
- the insulation plate 102 has a hole 114 aligned with the through hole 116 of the rear end of the thin power contact 106 and the second through hole 113 of the insulation body 104 .
- the insulation housing 101 covers the insulation plate 102 , the front ends of the thin power contacts 106 , 107 , the top and outsides of the insulation body 104 .
- the insulation housing 101 further has a side opening 117 through which the thin power contacts 106 , 107 pass, and a through hole 115 aligned with the hole 114 of the insulation plate 102 .
- a second screw 109 is threaded into the through hole 115 of the insulation housing 101 , the hole 114 of the insulation plate 102 , the through hole 116 of the front end of the thin power contact 106 and a second hole 113 of the insulation body 104 .
- a top of the second screw 109 on the insulation housing is used as a top electrode.
- the top of the second screw 109 and the conductive plate 105 on the bottom of the insulation body 104 are electronically connected to the positive and negative electrodes 212 , 213 through the two thin power contacts 106 , 107 and the power wire 3 , with further reference to FIG. 4 .
- the DC power source 2 is a solar power supply and has an upper housing 202 , a lower housing 203 covered by the upper housing 202 , a PCB 206 , a power switch 208 , a solar panel 201 , a rechargeable battery cell 205 and a regular battery 209 .
- the power wire 3 is mounted on one side of the lower housing 203 .
- the solar panel 201 is mounted on a top of the upper housing 202 and electronically connected to the PCB 206 mounted inside the lower housing 203 .
- the rechargeable battery cell 205 is mounted inside the lower housing 203 and electronically connected to the PCB 206 and the power switch 208 .
- the regular battery 209 can be replaceable from the lower housing 203 .
- the rechargeable battery cell 205 has the positive electrode and negative electrode respectively and electronically connected to the power wire 3 through the power switch 208 and the PCB 206 .
- the regular battery 209 is mounted inside the lower housing 203 and has the positive electrode 210 and negative electrode 211 respectively and electronically connected to the power wire 3 through the power switch 208 and the PCB 206 .
- the power switch 208 has three switching nodes, a first one is connected to the rechargeable battery cell 205 , a second one is connected to the regular battery 209 and a third one is connected to a none node (power off).
- the PCB 206 has a power charging circuit 206 a, an auto loud noise controlling unit 206 b, a microphone 207 and a regulator circuit 206 c.
- the power charging circuit 206 a regulates output voltage of the rechargeable battery cell 205 to avoid shortening the usage of the chargeable battery cell 205 .
- the auto loud noise control circuit 206 b is electronically connected to the microphone 207 to obtain the background noise, calculate the volume of the background noise, and control the background noise under 84 dB to power on or power off
- the regulator circuit 206 c has a setting voltage circuit and a voltage regulator to boost voltage of the rechargeable battery cell 205 (1.2V) and/or the regular battery 209 (1.5V) to 1.8V and then the regulator circuit 206 c regulates 1.8V to 1.4V and outputs the 1.4V voltage to the battery-shaped contactor 1 through the power wire 3 . That is, when the user uses the power switch 208 to switch to the first switching node, 1.2V is boosted to 1.8V and then regulated to 1.4V to be output to the power wire 3 .
- 1.4 voltage is a driven voltage of the hearing aid.
- the DC power source When the user uses the power switch 208 to switch to the second switching node, 1.5V is boosted to 1.8V and then regulated to 1.4V to be output to the power wire. Therefore, the DC power source always outputs 1.4V DC power to the battery-shaped conductor 1 .
- the driven voltage of the hearing aid is 1.1V to 1.6V, and the 1.4V is one selection thereof Therefore, the user can use the power switch 208 to select rechargeable battery cell 205 or the regular battery 209 to output the DC power.
- a hearing aid 4 has a battery container 41 having an opening 411 and a door 412 selectively closing the opening 411 .
- a gap (about 0.05 mm to 0.1 mm) exists between the door 412 and the opening 411 .
- a thickness of each thin power contact 106 , 107 is thinner than the gap so that the thin power contacts 106 , 107 pass through the gap. Therefore, the battery-shaped conductor 1 is received inside the battery container 41 from the opening 411 and the door 412 is easily closed on the opening 411 , as shown in FIG. 5C .
- the DC power source 2 outputs DC power to the hearing aid 4 so the door 412 does not open and close frequently.
- the DC power source 2 can be hooked on the collar, the sleeve, or the front of the clothes to avoid hooking up with the wire.
- the exterior power supply for the hearing aid not only uses solar power or battery but also powers off temporarily when the background noise is overloaded and powers on automatically once the background noise volume is back to the normal level. This protection can protect the hearing aid user's hearing capacity.
Abstract
Description
- This application is a continuation-in-part application of application Ser. No. 12/320, 956.
- 1. Field of the Invention
- The present invention relates to the field of a battery-powered hearing aid, and more particularly to an exterior power supply for a battery powered hearing aid.
- 2. Description of Related Art
- A battery-powered hearing aid commonly requires button cell battery used as power source thereof. In general, the user replaces the button cell battery of the hearing aid when he or she can no longer hear sounds clearly. Most of the button cell batteries contain mercury, which is a pollution source. If the user uses the non-rechargeable battery, he or she has to pay more money to buy the button cell batteries.
- Although some types of the button cell batteries are rechargeable, a capacity thereof is too small to provide a long use term so that the rechargeable button cell has to be often accessed from a battery container of the hearing aid. According to statistics, about 40% of hearing aid fixing is to replace a battery door of the battery container of the hearing aid.
- With reference to
FIGS. 7 f and 7 g of the US patent publication (Publication No. 2008/0311966 A1), a rechargeable battery assembly for a headset is proposed and has a casing 83 a, a power conducting pole 82 a, a power socket 36 and a power wire 38 with a power plug 37. The power socket is embedded inside the casing for receiving the power plug of the power wire 38 and electronically connected to the batteries 62 inside the casing. The casing uses the power socket so that a battery door is not required. - However, most of the hearing aids still have battery doors. The original problem of fixing battery doors frequently is not solved by the battery assembly of the cited US patent publication.
- To overcome the shortcomings, the present invention provides an exterior power supply for hearing aid to mitigate or obviate the aforementioned problems.
- The main objective of the present invention is to provide an exterior power supply for a battery powered hearing so that a battery door of a battery container of the hearing aid is not closed or opened frequently.
- The exterior power supply for a hearing aid has a battery-shaped conductor, two thin power contacts, and a DC power source. The battery-shaped conductor is received in a battery container of the hearing aid and has a top electrode and a bottom electrode. The thin power contacts are mounted to the battery-shaped conductor and respectively and electronically connected to the top and bottom electrodes of the battery-shaped conductor. Each thin power contact has a thickness matching a gap between an opening and a door of the battery container of the hearing aid. The DC power source is electronically connected to the battery-shaped conductor through a power wire and the thin power contacts to output DC power to the top and bottom electrodes of the battery-shaped conductor. Therefore, the hearing aid obtains DC power from the battery-shaped conductor and the button cell is not replaced frequently.
- Other objectives, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.
-
FIG. 1 is a perspective view showing an exterior power supply to a hearing aid in accordance with the present invention; -
FIG. 2 is an exploded perspective view of the power supply electrode contact in accordance with the present invention; -
FIG. 3 is an exploded perspective view of the exterior power supply in accordance with the present invention; -
FIG. 4 is a circuit diagram of the exterior power supply in accordance with the present invention; and -
FIGS. 5A to 5C are operational views of the exterior power supply in accordance with the present invention. - With reference to
FIGS. 1 ,FIG. 2A andFIG. 2B , an exterior power supply in accordance with the present invention has aDC power source 2, apower wire 3, twothin power contacts FIG. 4 , theDC power source 2 has apositive electrode 212 and anegative electrode 213 respectively connected to thepower wire 3. The twothin power contacts negative electrodes power wire 3. That is, two rear ends of thethin power contacts power wire 3. A throughhole 116 is formed at one of two front ends of thethin power contacts 106. - The
power wire 3 has two PVCplastic heads 108. The rear ends of the twothin power contacts plastic heads 108. - The battery-shaped conductor 1 is manufactured according to the size of button cell used by the hearing aid (such as battery number 675, 13, 312, 10, and 5 etc.). The battery-shaped conductor 1 has an
insulation body 104 having aninsulation plate 102, aconductive plate 105 and aninsulation housing 101. - The
insulation body 104 further has a first throughhole 111, and asecond hole 113 on a top of the insulation body. One of the two front ends of the twothin power contacts 107 is mounted on the top of theinsulation body 104 and next to the first throughhole 111. The front end of the otherthin power contact 106 is mounted on thesecond hole 113 and the throughhole 116 of thethin power contact 106 is aligned with thesecond hole 113. - The
conductive plate 105 is mounted on a bottom of theinsulation body 104 and further has ahollow pole 112 inserted to thethrough hole 111. Afirst screw 103 is threaded into the first throughhole 111 of theinsulation body 104 from the top of theinsulation body 104 and then touches the front end of thethin power contact 107. Therefore, thethin power contact 107 is electronically connected to theconductive plate 105 through thefirst screw 103. Theconductive plate 105 is used as a bottom electrode of the battery-shaped conductor 1. - The
insulation plate 102 covers the top of the insulation body and two front ends of thethin power contacts insulation plate 102 has ahole 114 aligned with the throughhole 116 of the rear end of thethin power contact 106 and the second throughhole 113 of theinsulation body 104. - The
insulation housing 101 covers theinsulation plate 102, the front ends of thethin power contacts insulation body 104. Theinsulation housing 101 further has a side opening 117 through which thethin power contacts hole 115 aligned with thehole 114 of theinsulation plate 102. Asecond screw 109 is threaded into the throughhole 115 of theinsulation housing 101, thehole 114 of theinsulation plate 102, the throughhole 116 of the front end of thethin power contact 106 and asecond hole 113 of theinsulation body 104. - Therefore, a top of the
second screw 109 on the insulation housing is used as a top electrode. The top of thesecond screw 109 and theconductive plate 105 on the bottom of theinsulation body 104 are electronically connected to the positive andnegative electrodes thin power contacts power wire 3, with further reference toFIG. 4 . - With reference to
FIG. 3 , theDC power source 2 is a solar power supply and has anupper housing 202, alower housing 203 covered by theupper housing 202, a PCB 206, apower switch 208, asolar panel 201, arechargeable battery cell 205 and aregular battery 209. Thepower wire 3 is mounted on one side of thelower housing 203. Thesolar panel 201 is mounted on a top of theupper housing 202 and electronically connected to the PCB 206 mounted inside thelower housing 203. Therechargeable battery cell 205 is mounted inside thelower housing 203 and electronically connected to thePCB 206 and thepower switch 208. Theregular battery 209 can be replaceable from thelower housing 203. Therechargeable battery cell 205 has the positive electrode and negative electrode respectively and electronically connected to thepower wire 3 through thepower switch 208 and thePCB 206. Theregular battery 209 is mounted inside thelower housing 203 and has thepositive electrode 210 andnegative electrode 211 respectively and electronically connected to thepower wire 3 through thepower switch 208 and thePCB 206. Thepower switch 208 has three switching nodes, a first one is connected to therechargeable battery cell 205, a second one is connected to theregular battery 209 and a third one is connected to a none node (power off). - With further reference to
FIG. 4 , thePCB 206 has apower charging circuit 206 a, an auto loudnoise controlling unit 206 b, amicrophone 207 and aregulator circuit 206 c. - The
power charging circuit 206 a regulates output voltage of therechargeable battery cell 205 to avoid shortening the usage of thechargeable battery cell 205. - The auto loud
noise control circuit 206 b is electronically connected to themicrophone 207 to obtain the background noise, calculate the volume of the background noise, and control the background noise under 84 dB to power on or power off - The
regulator circuit 206 c has a setting voltage circuit and a voltage regulator to boost voltage of the rechargeable battery cell 205 (1.2V) and/or the regular battery 209 (1.5V) to 1.8V and then theregulator circuit 206 c regulates 1.8V to 1.4V and outputs the 1.4V voltage to the battery-shaped contactor 1 through thepower wire 3. That is, when the user uses thepower switch 208 to switch to the first switching node, 1.2V is boosted to 1.8V and then regulated to 1.4V to be output to thepower wire 3. 1.4 voltage is a driven voltage of the hearing aid. When the user uses thepower switch 208 to switch to the second switching node, 1.5V is boosted to 1.8V and then regulated to 1.4V to be output to the power wire. Therefore, the DC power source always outputs 1.4V DC power to the battery-shaped conductor 1. In general, the driven voltage of the hearing aid is 1.1V to 1.6V, and the 1.4V is one selection thereof Therefore, the user can use thepower switch 208 to selectrechargeable battery cell 205 or theregular battery 209 to output the DC power. - With reference to
FIGS. 5A and 5B , ahearing aid 4 has abattery container 41 having anopening 411 and adoor 412 selectively closing theopening 411. A gap (about 0.05 mm to 0.1 mm) exists between thedoor 412 and theopening 411. A thickness of eachthin power contact thin power contacts battery container 41 from theopening 411 and thedoor 412 is easily closed on theopening 411, as shown inFIG. 5C . TheDC power source 2 outputs DC power to thehearing aid 4 so thedoor 412 does not open and close frequently. - The
DC power source 2 can be hooked on the collar, the sleeve, or the front of the clothes to avoid hooking up with the wire. Based on foregoing description, the exterior power supply for the hearing aid not only uses solar power or battery but also powers off temporarily when the background noise is overloaded and powers on automatically once the background noise volume is back to the normal level. This protection can protect the hearing aid user's hearing capacity. - Even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and function of the invention, the disclosure is illustrative only. Changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.
Claims (16)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US13/273,772 US8831257B2 (en) | 2009-02-10 | 2011-10-14 | Exterior power supply for hearing aid |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/320,956 US20100202640A1 (en) | 2009-02-10 | 2009-02-10 | Exterior power supply for hearing aid |
US13/273,772 US8831257B2 (en) | 2009-02-10 | 2011-10-14 | Exterior power supply for hearing aid |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US12/320,956 Continuation-In-Part US20100202640A1 (en) | 2009-02-10 | 2009-02-10 | Exterior power supply for hearing aid |
Publications (2)
Publication Number | Publication Date |
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US20120033839A1 true US20120033839A1 (en) | 2012-02-09 |
US8831257B2 US8831257B2 (en) | 2014-09-09 |
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Application Number | Title | Priority Date | Filing Date |
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US13/273,772 Expired - Fee Related US8831257B2 (en) | 2009-02-10 | 2011-10-14 | Exterior power supply for hearing aid |
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US (1) | US8831257B2 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100202627A1 (en) * | 2009-01-15 | 2010-08-12 | Randolph Gray | Docking System Employing a Solar Energy Charging System |
EP2871864A1 (en) * | 2013-11-12 | 2015-05-13 | GN Resound A/S | Battery assembly for a hearing device and associated method |
USD755976S1 (en) * | 2015-04-23 | 2016-05-10 | Earzqo, Inc | Hearing aid charger housing |
US9398383B2 (en) | 2013-11-12 | 2016-07-19 | Gn Resound A/S | Battery assembly for a hearing device and associated method |
CN108200510A (en) * | 2018-01-02 | 2018-06-22 | 陈炳华 | A kind of portable dust-proof speaker |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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US20140167514A1 (en) * | 2012-12-14 | 2014-06-19 | Raz Imports, Inc. | Method and Apparatus for Powering a Battery-Operable Device with an External Source of Power |
KR20200052156A (en) * | 2018-11-06 | 2020-05-14 | 삼성전자주식회사 | Adapter and electronic system having the same |
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US4946396A (en) * | 1988-10-19 | 1990-08-07 | Takara Co., Ltd. | Adapter for connector to external power supply |
US5296315A (en) * | 1993-04-29 | 1994-03-22 | Rein Clifford J | Device to permit the use of non-standard batteries to power battery operated devices |
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US7354301B2 (en) * | 2004-05-19 | 2008-04-08 | Sony Corporation | DC adapter and electronic apparatus using the same |
US8351302B2 (en) * | 2011-02-09 | 2013-01-08 | Jeremy Laurence Fischer | Power supply for clock |
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US6359992B1 (en) | 1997-02-06 | 2002-03-19 | Micro Ear Technology | Acoustics conditioner |
US6366676B1 (en) | 1998-05-21 | 2002-04-02 | In'tech Industries | Programming pill and methods of manufacturing and using the same |
WO2004084582A1 (en) | 2003-03-17 | 2004-09-30 | Microsound A/S | Hearing prosthesis comprising rechargeable battery information |
US8086288B2 (en) | 2007-06-15 | 2011-12-27 | Eric Klein | Miniature wireless earring headset |
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US4946396A (en) * | 1988-10-19 | 1990-08-07 | Takara Co., Ltd. | Adapter for connector to external power supply |
US5296315A (en) * | 1993-04-29 | 1994-03-22 | Rein Clifford J | Device to permit the use of non-standard batteries to power battery operated devices |
US6007373A (en) * | 1998-05-22 | 1999-12-28 | Chew; William E. | Apparatuses and methods for coupling DC power tools to external DC power sources |
US20030156727A1 (en) * | 1999-06-16 | 2003-08-21 | Andi Vonlanthen | Behind-the-ear hearing aid and attachment module for same |
US7354301B2 (en) * | 2004-05-19 | 2008-04-08 | Sony Corporation | DC adapter and electronic apparatus using the same |
US8351302B2 (en) * | 2011-02-09 | 2013-01-08 | Jeremy Laurence Fischer | Power supply for clock |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
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US20100202627A1 (en) * | 2009-01-15 | 2010-08-12 | Randolph Gray | Docking System Employing a Solar Energy Charging System |
EP2871864A1 (en) * | 2013-11-12 | 2015-05-13 | GN Resound A/S | Battery assembly for a hearing device and associated method |
US9398383B2 (en) | 2013-11-12 | 2016-07-19 | Gn Resound A/S | Battery assembly for a hearing device and associated method |
USD755976S1 (en) * | 2015-04-23 | 2016-05-10 | Earzqo, Inc | Hearing aid charger housing |
CN108200510A (en) * | 2018-01-02 | 2018-06-22 | 陈炳华 | A kind of portable dust-proof speaker |
Also Published As
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US8831257B2 (en) | 2014-09-09 |
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